М. П. Денисенко, О. В. Ольшанська, and Д. В. Григорчук, “DEVELOPMENT OF INTERNATIONAL TOURISM IN THE CONTEXT OF FORECASTS OF THE WORLD TOURISM ORGANIZATION”, vzuk, no. 4 (56), pp. 41–47, Dec. 2019, doi: 10.31732/2663-2209-2019-56-41-47.